Abstract
To obtain carborundum-containing composite coatings on the copper surface by photochemical processes, it is proposed to use sorption layers obtained by wetting in appropriate solutions.Chemical and photochemical processes occurring in the sorption layer under the influence of electromagnetic waves of sunlight are considered.It is shown that as a result of such an impact, copper particles are formed that ensure the connection of carborundum particles with each other and with the copper base.It was found that when the soluble products of these processes are washed with water, strong agglomerate consisting of carborundum and copper particles remains on the surface of the sample.This agglomerate is the basis of the second phase of the composite coating.The processes of creating a matrix layer by chemical or galvanic nickel plating are considered.When studying the process of obtaining carborundum containing composite coatings on the surface of copper using an electron microscope, it was shown that the content of silicon carbide on the surface of copper can reach 10 wt.%.At the same time, the hardness of copper can be increased by 40 -41 % by using photochemical processes.